<?php

/**
 * Field handler to provide simple renderer that allows using a themed user link
 */
class views_handler_field_user_name extends views_handler_field_user {

    /**
     * Add uid in the query so we can test for anonymous if needed.
     */
    function init(&$view, &$data) {
        parent::init($view, $data);
        if (!empty($this->options['overwrite_anonymous'])) {
            $this->additional_fields['uid'] = 'uid';
        }
    }

    function option_definition() {
        $options = parent::option_definition();

        $options['overwrite_anonymous'] = array('default' => FALSE);
        $options['anonymous_text'] = array('default' => '', 'translatable' => TRUE);

        return $options;
    }

    function options_form(&$form, &$form_state) {
        parent::options_form($form, $form_state);

        $form['overwrite_anonymous'] = array(
            '#title' => t('Overwrite the value to display for anonymous users'),
            '#type' => 'checkbox',
            '#default_value' => !empty($this->options['overwrite_anonymous']),
            '#description' => t('If selected, you will see a field to enter the text to use for anonymous users.'),
        );
        $form['anonymous_text'] = array(
            '#title' => t('Text to display for anonymous users'),
            '#type' => 'textfield',
            '#default_value' => $this->options['anonymous_text'],
            '#process' => array('views_process_dependency'),
            '#dependency' => array(
                'edit-options-overwrite-anonymous' => array(1),
            ),
        );
    }

    function render_link($data, $values) {
        if (!empty($this->options['link_to_user']) || !empty($this->options['overwrite_anonymous'])) {
            $account = new stdClass();
            $account->uid = $values->{$this->aliases['uid']};
            if (!empty($this->options['overwrite_anonymous']) && !$account->uid) {
                // This is an anonymous user, and we're overriting the text.
                return check_plain($this->options['anonymous_text']);
            } elseif (!empty($this->options['link_to_user'])) {
                $account->name = $values->{$this->field_alias};
                return theme('username', $account);
            }
        }
        // Otherwise, there's no special handling, so return the data directly.
        return $data;
    }

}

